1. AstrosCallis: Brady Aiken, LHP, Cathedral Catholic HS (San Diego) -- Combines stuff and polish better than anyone in this deep pitching class, including the college arms.Mayo: Carlos Rodon, LHP, North Carolina State -- He'll solidify his place atop the Draft before June.

2. MarlinsCallis: Rodon -- Entered the year as the strong favorite to go No. 1, and despite a good but not great spring, he could still get there if his 15-strikeout outing against Georgia Tech on Friday heralds a strong finish.Mayo: Tyler Kolek, RHP, Shepherd (Texas) HS -- The Marlins like young pitchers with front-line potential. Kolek and his 100-mph fastball fit that description.

3. White SoxCallis: Kolek -- Chicago loves power arms and high ceilings, and no one in this Draft class throws as hard as consistently.Mayo: Jeff Hoffman, RHP, East Carolina -- Assuming he's healthy, he fits the mold of college arms White Sox like, but with more upside.

4. CubsCallis: Hoffman -- Before he missed his start last weekend with minor arm soreness, Hoffman was pushing past Rodon. If healthy, he'd be a nice fit for Chicago.Mayo: Aiken -- Could very easily go in the top three, and I can't see him going any later than this.

5. TwinsCallis: Alex Jackson, C/OF, Rancho Bernardo HS (San Diego) -- Easily the best position player available, could become a full-time right fielder to expedite his bat to the big leagues.Mayo: Jackson -- Best bat in the class, but will he stay behind the plate?

6. MarinersCallis: Aaron Nola, RHP, Louisiana State -- College baseball's top-performing pitcher should be the first starter from this Draft to reach the Majors.Mayo: Nola -- Has performed his way up this high, can get to bigs quickly.

7. PhilliesCallis: Nick Gordon, SS, Olympia HS (Orlando, Fla.) -- Has passed North Carolina State shortstop Trea Turner to become the best up-the-middle player available (assuming Jackson is moved to the outfield).Mayo: Gordon -- A year after J.P. Crawford? You can never have too many shortstops.

10. MetsCallis: Bradley Zimmer, OF, San Francisco -- Though New York's past three first-rounders have been hitters, it could go for a fourth in Zimmer, this Draft's best all-around college position player.Mayo: Zimmer -- In a weaker class for college bats, Zimmer's tools and performance stand out.